6band
Scientists are considering the possibility of sending humans to Mars in the coming decades. Although there have been successful manned missions to the Moon in the 1960s and 1970s, Mars is 150 times further away from Earth The reading passage explores three possible problems of project sending human to Mars. However, the lecturer respectively proposes three solutions appropriate to the reading problem.
At first, the reading mentions that the trip to the Mars take more time than travel to the Moon and astronauts may r...